The antioxidant activity was obtained through a modified
ABTS+ free radical capture method (Re et al., 1999). The cation
ABTS+ radical was generated through the reaction of the ABTS
stock solution 7 mM with 140 mM of potassium persulfate leaving
it in the dark at room temperature for 16 h before use. The ABTS+
radical was diluted in ethanol for an absorbance of 0.70 ± 0.05 at
734 nm.